I don't think the Cavs would do that trade. They really like Nance and aren't exactly clamoring to get rid of Thompson either.
Why do the Cavs really like Nance out of curiosity?
Per min his rebounding and scoring were down last year (15.5 points to 12.5 points, 12 rebounds to 11) and he shot a bit worse from the field. Worse, he has missed at least 15 games every season of his career. He has an extension about to kick in also and is making 43 million the next 3 years when his best role is probably a first big off the bench. Do the Cavs really like paying Nance 43 million for 65 games a year or less?
I don't think he is awful and would certainly help the Celtics given our current frontcourt, but he just seems like another guy. It would interesting if he was really highly valued by the Cavs as a core player.
Thompson I have a hard time believing anyone could get too excited about. He has missed 70 games the last two seasons. Is his value just that he is an 18.5 million expiring? Unless there is a deal lined up I can't imagine any team being excited about Thompson at 18.5 million.